Modeling and Simulation Techniques for Unmanned Vehicle Systems

Unmanned Autonomous Vehicle (UAV) systems have become possible in recent history thanks primarily to the effects of Moore’s Law — the doubling of processing power every 18 months. This trend, coupled with improvements in sensors and actuators, has enabled the advanced signal and data processing necessary to control UAVs. However, the complexity of UAV systems has taxed traditional design workflows, and revealed numerous challenges such as shorter design cycles, greater performance and reliability demands, and cost constraints.

Posted in: Articles, Aerospace, CAD / CAM / CAE, Computer simulation, Design processes, Autonomous vehicles, Unmanned aerial vehicles

Laser Polarimeter Classifies Remote Material

Advanced Optical Technologies, Inc. (AOT) has been awarded a Phase 2 SBIR contract to develop a next-generation laser polarimeter for the US Army RDECOM CERDEC Night Vision and Electronic Sensors Directorate (NVESD), traditionally known as the US Army Night-Vision Labs. The polarimeter will implement AOT’s polarization-components techniques (PCT), which apply machine-learning algorithms to polarimeter data for remote material classification.

Posted in: Application Briefs, Artificial intelligence, Lasers, Optics, Suppliers, Visibility, Military vehicles and equipment

Buoy System Tracks Ships in Real Time

According to the U.S. Department of Homeland Security, the nation’s 360 ports and waterways remain especially vulnerable to attack from small vessels carrying improvised explosive devices, including radioactive dirty bombs. Intellicheck Mobilisa, a wireless-technology firm, will address the vulnerability with Aegeus, a buoy system that communicates in real time to the shore.

Posted in: Application Briefs, Architecture, Security systems, Sensors and actuators, Wireless communication systems, Marine vehicles and equipment

New Technology Could Improve Inertial Guidance System Accuracy

NASA has tapped a team of aerospace, military and academic researchers for a three-year project that could dramatically improve in-flight navigation capabilities for space vehicles, military air and sea assets, and commercial vehicles. The project, “Fast Light Optical Gyroscopes for Precision Inertial Navigation,” is intended to enhance the performance of a vehicle’s inertial guidance system by refining the optical gyroscopes that drive it. These highly sensitive gyroscopes, paired with accelerometers, measure a vehicle’s attitude or orientation based on its angular or rotational momentum in flight, and track its velocity and acceleration to precisely determine its position, flight path and attitude.

Posted in: Application Briefs, Navigation and guidance systems, Optics, Research and development, Vehicle acceleration

Game-Based Training Applications Teach Soldiers Cultural Skills

Charles River Analytics released a case study of an effort for the US Army called CAATE (Culturally Aware Agents for Training Environments). Under this effort, Charles River developed tools to create game-based training applications for soldiers that teach them mission-critical social and cultural skills. Through computer games and by interacting with CAATE-based artificially intelligent agents, soldiers can safely train to effectively interact with residents of other countries and from different cultures.

Posted in: Application Briefs, Artificial intelligence, Computer software / hardware, Collaboration and partnering, Education, Globalization, Military vehicles and equipment

Smart Hoses Simplify Unmanned Aircraft Refueling

Icon Aerospace supplies refueling hoses to Tier-1 suppliers and air forces across the globe. The IconIC™ hose system secures power with telemetry cables and fiber-optics for data transfer. The technology provides a range of key control and communication functions to take place between a tanker and receiver aircraft while the receiver aircraft undergoes mid-air refueling.

Posted in: Application Briefs, Defense, Data exchange, Fiber optics, Telemetry, Hoses, Refueling

Looking Under the Hood of a Military Power Supply

There are power supplies in virtually every military electronic system. These ubiquitous devices come in all sizes and power ratings. And just like their commercial counterparts, they are available in the AC/DC, DC/DC and DC/AC configurations that provide the appropriate electrical energy to operate the electronics.

Posted in: Articles, Articles, Electronics & Computers, Power electronics, Electric power, Military vehicles and equipment

An Improved SDR FPGA Verification Methodology for Emerging OFDMA Waveforms

The rapid evolution of commercial technologies such as Long Term Evolution (LTE) is becoming more attractive for Software-Defined Radio (SDR) and public safety applications [1,2]. They have the potential to support high data throughput applications with scalable subcarriers and the use of multiple antenna techniques such as Multiple-Input Multiple- Output (MIMO) technology.

Posted in: Articles, RFM Catchall, Aerospace, Antennas, Architecture, Oscilloscopes

Simulation Optimizes Safety and Performance When Integrating an Antenna Onto a Platform

Successful integration of an antenna onto a vehicle platform poses many challenges. Vehicle features impact antenna performance by blocking, reflecting, or reradiating energy, and co-site interference can impair the effectiveness of multiantenna configurations. Platform motion and environmental factors such as terrain and buildings may reduce system effectiveness in actual operational conditions. Furthermore, radiation hazards may pose risks to nearby personnel. Modeling and simulation provides a powerful tool to aid in understanding these issues and developing solutions.

Posted in: Articles, RFM Catchall, Aerospace, Body structures, Computer simulation, Antennas, Electromagnetic compatibility, Radiation

TVS Diode Arrays

Littelfuse, Inc. (Chicago, IL) has expanded its SP1005 and SP1007 Series General Purpose TVS Diode Arrays (SPA® Devices) with two new 0402 size devices designed to offer modern integrated circuits (ICs) better protection from electrostatic discharge (ESD). The low dynamic resistances of the SP1005-01ETG and SP1007-01ETG allow them to provide a clamping voltage up to 80 percent lower than competing technologies, such as Multi-Layer Varistors (MLVs). Typical applications include protection of keypads, buttons, switches, and low-speed I/Os on consumer electronics such as smartphones, tablet computers, e-readers, portable navigation devices, digital cameras, portable medical devices, etc.

Posted in: Products, Products, Electronics & Computers